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Proceedings Paper

Compact and versatile pulse generation and shaping subsystem for high-energy laser systems
Author(s): Bruno M. Van Wonterghem; David Ralph Speck; M. J. Norman; Russell B. Wilcox; Victor P. Karpenko; James B. Richards
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Paper Abstract

This paper describes the amplifier and beam shaping section of a new pulse generation system that will drive the Beamlet laser at LLNL. The master oscillator and pulse shaping system are described in an accompanying contribution [R. B. Wilcox ea., `Fusion Laser oscillator and pulse-forming system using integrated optics.', these proceedings]. A modified regenerative amplifier produces a gain of 109 to bring the oscillator pulses to the mJ- level. A serrated aperture and birefringent beam shaper produce a flat-topped square beam with high fill factor. A single four-passed Nd:glass rod amplifier provides sufficient gain to generate the desired 12 J output energy in a 3 nsec pulse with very small beam profile, wavefront and pulse shape distortion. We present a description of the system components, followed by a discussion of its performance, based upon over 150 full front end shots being completed since its assembly.

Paper Details

Date Published: 1 May 1993
PDF: 11 pages
Proc. SPIE 1870, Laser Coherence Control: Technology and Applications, (1 May 1993); doi: 10.1117/12.154490
Show Author Affiliations
Bruno M. Van Wonterghem, Lawrence Livermore National Lab. (United States)
David Ralph Speck, Lawrence Livermore National Lab. (United States)
M. J. Norman, Lawrence Livermore National Lab. (United States)
Russell B. Wilcox, Lawrence Livermore National Lab. (United States)
Victor P. Karpenko, Lawrence Livermore National Lab. (United States)
James B. Richards, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 1870:
Laser Coherence Control: Technology and Applications
Howard T. Powell; Terrance J. Kessler, Editor(s)

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